Build failed. https://zuul.opendev.org/t/openstack/buildset/4bab39a800eb4a32ae556460ee50890e - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/85c030fd52234e3786c67b3ed661e606 : FAILURE in 4m 11s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/5cd17f64473347868926f230679f6b0c : SUCCESS in 6m 47s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/2e52ae1182ae422dbc046c6c2fbd4b9f : SUCCESS in 3m 03s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/08a8070170a0452aac8bdf7625183378 : SUCCESS in 3m 24s